Elementary Statistics Using Excel (6th Edition)

Chapter 6

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A continuous random variable has a normal ... more

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; A normal distribution has a bell-shaped curve... more

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The mean is and the standard deviation is . ; A ... more

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The notation is a score with an area of to the ... more

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0.4 ; The probability that a value is greater than... more

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0.8 ; The probability that a value is less than 4 ... more

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0.2 ; The probability that a value is between 2 ... more

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0.4 ; The probability that a value is between 2.5 ... more

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0.6700 ; The standard normal curve has its shaded ... more

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0.8508 ; The standard normal curve has its shaded ... more

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0.6992 ; The standard normal curve has its shaded ... more

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0.6063 ; The standard normal curve has its shaded ... more

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; The standard normal curve has 0.8907 of its ... more

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; he standard normal curve has 0.3050 of its area... more

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; The standard normal curve has 0.9265 of its ... more

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; The standard normal curve has 0.2061 of its ... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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Sketch the standard normal distribution curve with... more

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is the value that corresponds to the lowest of ... more

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is the value that corresponds to the lowest of ... more

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and 2.05 ; On the standard normal curve, the ... more

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and 1.88 ; On the standard normal curve, the ... more

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1.28 ; denotes the -value whose area to its right ... more

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2.05 ; denotes the -value whose area to its right ... more

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1.75 ; denotes the -value whose area to its right ... more

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1.04 ; denotes the -value whose area to its right ... more

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68.26 ; Find the area to the left of by referring... more

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95.44 ; Find the area to the left of by referring... more

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99.74 ; Find the area to the left of by referring... more

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99.98 ; Find the area to the left of by referring... more

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A standard normal distribution has a mean of 0 and... more

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No, because the distribution of randomly generated... more

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0.8849 ; The shaded area to the left of a score of... more

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0.7257 ; The shaded area to the right of a score ... more

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0.9053 ; The shaded area between a score of 79 and... more

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0.1571 ; The shaded area between a score of 112 ... more

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136 ; The shaded area to the left of  is the ... more

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115 ; The shaded area to the right of  is the ... more

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69 ; The shaded area to the right of  is the ... more

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120 ; The shaded area to the left of  is the ... more

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0.0116 ;  The probability that an adult male has a... more

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0.0968 ; The probability that an adult female has ... more

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0.6612 ; The probability that an adult females has... more

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0.5867 ; Express the probability that the distance... more

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24.9 in. ; The bottom 90% means that an area of 0.... more

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22.0 in. ; The bottom 25% means that an area of 0.... more

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20.9 in and 26.1 in. No, a distance of 26 inches ... more

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20.7 in and 24.7 in. Yes, a distance of 20 inches ... more

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0.2005No, the proportion of a certain mental ... more

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Men: 95.99%Ladies: 99.99%The desk seems to be made... more

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55.64%Yes, about 44% of ladies were excluded under... more

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0.0070 ; There are three quartiles in a data set. ... more

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Sample mean; sample variance; sample proportion ; ... more

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No. The sampling distribution of the sample mean ... more

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No. The sample taken does not represent a simple ... more

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 ProportionProbability00.250.5010.25  Yes, the ... more

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 ProportionProbability01  Yes, the mean of the ... more

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Yes, the formula describes the sampling ... more

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The mean absolute deviation (MAD) of a sample is ... more

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The sample size is greater than 30 .There must be ... more

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No. Though the sample size is small , it is ... more

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; The notation and represents the mean and ... more

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Yes. The distribution of the annual incomes in the... more

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; Find . ; Substitute the value of , and to ... more

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0.0721 ; Substitute the values of , and to find... more

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; Find . ; Find the z score corresponding to . ; ... more

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The histogram of the data should closely resemble ... more

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The points in the normal quantile plot do not ... more

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A histogram.A normal quantile plot.Data Outliers... more

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The data appears to come from a population that is... more

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The data appears to come from a population that is... more

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The data appears to come from a population that is... more

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The data appears to come from a population that is... more

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The data appears to come from a population that is... more

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The data appears to come from a population that is... more

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The data appears to come from a population that is... more

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The data appears to come from a population that is... more

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The data appears to come from a population that is... more

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 The data appears to come from a population that ... more

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 The data appears to come from a population that ... more

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 The data appears to come from a population that ... more

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Interpretation: Data appears to come from a ... more

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Construct a table with three columns and 7 rows.... more

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Construct a table with three columns and 9 rows.... more

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Construct a table with three columns and 10 rows.... more

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The original set of data does not come from a ... more

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The requirements are satisfied since the values of... more

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 Interpretation: The expected average number of ... more

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It would resemble the shape of the normal ... more

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; Check if the requirements, and , are satisfied... more

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Cannot be determined; requirements for normal ... more

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Cannot be determined; requirements for normal ... more

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; Check if the requirements, and , are satisfied... more

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 Interpretation: Since the probability is greater ... more

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 Interpretation: Since the probability is less ... more

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 Interpretation: The probability of having exactly... more

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 Explanation: The probability of having exactly 10... more

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Normal Approximation, using table: 0.1723Normal ... more

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228 ; The problem asks for the total number of ... more

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Since the data set has a normal distribution, the ... more

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; Using the table of z-values, look for the z-... more

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; Using the table of z-scores, find the ... more

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; Using the table of z-scores, find the ... more

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0.8106 ; Determine the -value of the given data ... more

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0.6292 ; Use the formula to determine the z-score... more

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84.536 mmHg ; The 90th percentile indicates that ... more

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0.9564 ; Use the formula to determine the z-score... more

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The graph suggests that the sample is taken from a... more

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No, the result matches the assumption for the ... more

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; Create a dot plot via the following steps:Round... more

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